Our High Fire Opaque series consists of 21 inter-mixable lead free enamels that blend so well that a complete spectrum of hues and shades may be achieved with a basic stock of colors. These vibrant enamels mature at the glass fusing temperature range of 1300?ųF - 1550?ųF. They can be mixed with Water Friendly Medium then air brushed, painted, or sponged on the top of glass or sandwiched between layers of glass. Our High Fire enamels are the ideal material for enameling dinner ware. Bead makers will find these colors easy to use. Just roll a hot bead through some dry powder then case with a layer of clear glass.Add some of these colors to your paper weights or blown glass vessels. They can be picked up by rolling hot glass through the powder or sifted onto the hot surface. It is best to case the colors before reheating to preserve their richness.The High Fire Opaques can also be used for copper enameling. These colors ARE approved for food bearing surfaces.